donnelly@mergvax.UUCP (Mark Donnelly) (06/24/88)
I need a hand interperting DEC's Delni specifications and those of you who have some experience with like devices. First off in DEC's January-March Networks and Communications Buyer's Guide (I got it from DEC by calling 617-351-4401) it indicates you can put together the following configuration: ----------- | DELNI | STAND ALONE CONFIGURATION ----------- | | <= 50m Cable Lenght | ----------- | DELNI | ----------- | | <=40m to 45m Cable Lenght ----------- |Work Sta | ----------- **** Are the cable lenghts for real? **** Can you do the same setup with the Cabletron MT-800 Units? **** Besides the obvious are there any REAL-LIFE experiences where this configuration has negative effects? Maybe it's the way I am reading the book but I come across areas which appear to contradict this. Standard Disclaimers --- Thanks, Mark Donnelly philabs!mergvax!donnelly
ron@topaz.rutgers.edu (Ron Natalie) (06/28/88)
The cable lengths seem to be for real. I've got a 50m cable running from my office to two different DELNI type devices (one's a TCL and the other's a Cabletron). These in turn are connected by 10m cables to their transceivers. Trancevier cable distances are really dependant on what the cable is made out of. We've streched them as far as 100m (it wasn't me who did that, honest) without real problem. I've never found anything in the DEC network book to be wrong. The DEC Network and Communications buyers guide rules on building Ethernet networks are more conservative than what the SPEC's allow and if build by this you shouldn't have any problems. The only complaint I have with spec is that it always specifies DEC parts (natch) and that they always provide the protocol independant solution, which I don't believe in for large networks. -Ron